Various fungal diseases cause brown leaves
When the rose petals large black-brown spots get, the sooty dew caused by the fungus Diplocarpon rosae is often stuck - one of the most common Rose diseases - behind it. If, on the other hand, it is initially orange and only later brownish spots, then the Rose rust Infest your roses.
Treat infected roses properly
In principle, affected areas are as quickly as possible remove with the secateurs. After that, the infected leaves and shoots do not belong in the compost, but in the household waste. In severe cases it can also a chemical treatment be sensible, as otherwise the roses are completely bare in midsummer.
Tips
Prevention is better than cure: Always water roses from below; the leaves must not be moistened or moistened. must be able to dry quickly. Therefore an airy location so important too! In addition to appropriate care, the right soil and a sunny, but not too warm place are also relevant for rose health.
